shared.c (view raw)
1/* shared.c: global vars + some callback functions
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 *
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
7 */
8
9#include "cgit.h"
10
11struct cgit_repolist cgit_repolist;
12struct cgit_context ctx;
13int cgit_cmd;
14
15int chk_zero(int result, char *msg)
16{
17 if (result != 0)
18 die("%s: %s", msg, strerror(errno));
19 return result;
20}
21
22int chk_positive(int result, char *msg)
23{
24 if (result <= 0)
25 die("%s: %s", msg, strerror(errno));
26 return result;
27}
28
29int chk_non_negative(int result, char *msg)
30{
31 if (result < 0)
32 die("%s: %s",msg, strerror(errno));
33 return result;
34}
35
36struct cgit_repo *cgit_add_repo(const char *url)
37{
38 struct cgit_repo *ret;
39
40 if (++cgit_repolist.count > cgit_repolist.length) {
41 if (cgit_repolist.length == 0)
42 cgit_repolist.length = 8;
43 else
44 cgit_repolist.length *= 2;
45 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
46 cgit_repolist.length *
47 sizeof(struct cgit_repo));
48 }
49
50 ret = &cgit_repolist.repos[cgit_repolist.count-1];
51 ret->url = trim_end(url, '/');
52 ret->name = ret->url;
53 ret->path = NULL;
54 ret->desc = "[no description]";
55 ret->owner = NULL;
56 ret->group = ctx.cfg.repo_group;
57 ret->defbranch = "master";
58 ret->snapshots = ctx.cfg.snapshots;
59 ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
60 ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
61 ret->module_link = ctx.cfg.module_link;
62 ret->readme = NULL;
63 return ret;
64}
65
66struct cgit_repo *cgit_get_repoinfo(const char *url)
67{
68 int i;
69 struct cgit_repo *repo;
70
71 for (i=0; i<cgit_repolist.count; i++) {
72 repo = &cgit_repolist.repos[i];
73 if (!strcmp(repo->url, url))
74 return repo;
75 }
76 return NULL;
77}
78
79void *cgit_free_commitinfo(struct commitinfo *info)
80{
81 free(info->author);
82 free(info->author_email);
83 free(info->committer);
84 free(info->committer_email);
85 free(info->subject);
86 free(info->msg);
87 free(info->msg_encoding);
88 free(info);
89 return NULL;
90}
91
92int hextoint(char c)
93{
94 if (c >= 'a' && c <= 'f')
95 return 10 + c - 'a';
96 else if (c >= 'A' && c <= 'F')
97 return 10 + c - 'A';
98 else if (c >= '0' && c <= '9')
99 return c - '0';
100 else
101 return -1;
102}
103
104char *trim_end(const char *str, char c)
105{
106 int len;
107 char *s, *t;
108
109 if (str == NULL)
110 return NULL;
111 t = (char *)str;
112 len = strlen(t);
113 while(len > 0 && t[len - 1] == c)
114 len--;
115
116 if (len == 0)
117 return NULL;
118
119 c = t[len];
120 t[len] = '\0';
121 s = xstrdup(t);
122 t[len] = c;
123 return s;
124}
125
126char *strlpart(char *txt, int maxlen)
127{
128 char *result;
129
130 if (!txt)
131 return txt;
132
133 if (strlen(txt) <= maxlen)
134 return txt;
135 result = xmalloc(maxlen + 1);
136 memcpy(result, txt, maxlen - 3);
137 result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
138 result[maxlen] = '\0';
139 return result;
140}
141
142char *strrpart(char *txt, int maxlen)
143{
144 char *result;
145
146 if (!txt)
147 return txt;
148
149 if (strlen(txt) <= maxlen)
150 return txt;
151 result = xmalloc(maxlen + 1);
152 memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
153 result[0] = result[1] = result[2] = '.';
154 return result;
155}
156
157void cgit_add_ref(struct reflist *list, struct refinfo *ref)
158{
159 size_t size;
160
161 if (list->count >= list->alloc) {
162 list->alloc += (list->alloc ? list->alloc : 4);
163 size = list->alloc * sizeof(struct refinfo *);
164 list->refs = xrealloc(list->refs, size);
165 }
166 list->refs[list->count++] = ref;
167}
168
169struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
170{
171 struct refinfo *ref;
172
173 ref = xmalloc(sizeof (struct refinfo));
174 ref->refname = xstrdup(refname);
175 ref->object = parse_object(sha1);
176 switch (ref->object->type) {
177 case OBJ_TAG:
178 ref->tag = cgit_parse_tag((struct tag *)ref->object);
179 break;
180 case OBJ_COMMIT:
181 ref->commit = cgit_parse_commit((struct commit *)ref->object);
182 break;
183 }
184 return ref;
185}
186
187int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
188 void *cb_data)
189{
190 struct reflist *list = (struct reflist *)cb_data;
191 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
192
193 if (info)
194 cgit_add_ref(list, info);
195 return 0;
196}
197
198void cgit_diff_tree_cb(struct diff_queue_struct *q,
199 struct diff_options *options, void *data)
200{
201 int i;
202
203 for (i = 0; i < q->nr; i++) {
204 if (q->queue[i]->status == 'U')
205 continue;
206 ((filepair_fn)data)(q->queue[i]);
207 }
208}
209
210static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
211{
212 enum object_type type;
213
214 if (is_null_sha1(sha1)) {
215 file->ptr = (char *)"";
216 file->size = 0;
217 } else {
218 file->ptr = read_sha1_file(sha1, &type,
219 (unsigned long *)&file->size);
220 }
221 return 1;
222}
223
224/*
225 * Receive diff-buffers from xdiff and concatenate them as
226 * needed across multiple callbacks.
227 *
228 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
229 * ripped from git and modified to use globals instead of
230 * a special callback-struct.
231 */
232char *diffbuf = NULL;
233int buflen = 0;
234
235int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
236{
237 int i;
238
239 for (i = 0; i < nbuf; i++) {
240 if (mb[i].ptr[mb[i].size-1] != '\n') {
241 /* Incomplete line */
242 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
243 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
244 buflen += mb[i].size;
245 continue;
246 }
247
248 /* we have a complete line */
249 if (!diffbuf) {
250 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
251 continue;
252 }
253 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
254 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
255 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
256 free(diffbuf);
257 diffbuf = NULL;
258 buflen = 0;
259 }
260 if (diffbuf) {
261 ((linediff_fn)priv)(diffbuf, buflen);
262 free(diffbuf);
263 diffbuf = NULL;
264 buflen = 0;
265 }
266 return 0;
267}
268
269int cgit_diff_files(const unsigned char *old_sha1,
270 const unsigned char *new_sha1,
271 linediff_fn fn)
272{
273 mmfile_t file1, file2;
274 xpparam_t diff_params;
275 xdemitconf_t emit_params;
276 xdemitcb_t emit_cb;
277
278 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
279 return 1;
280
281 diff_params.flags = XDF_NEED_MINIMAL;
282 emit_params.ctxlen = 3;
283 emit_params.flags = XDL_EMIT_FUNCNAMES;
284 emit_params.find_func = NULL;
285 emit_cb.outf = filediff_cb;
286 emit_cb.priv = fn;
287 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
288 return 0;
289}
290
291void cgit_diff_tree(const unsigned char *old_sha1,
292 const unsigned char *new_sha1,
293 filepair_fn fn, const char *prefix)
294{
295 struct diff_options opt;
296 int ret;
297 int prefixlen;
298
299 diff_setup(&opt);
300 opt.output_format = DIFF_FORMAT_CALLBACK;
301 opt.detect_rename = 1;
302 opt.rename_limit = ctx.cfg.renamelimit;
303 DIFF_OPT_SET(&opt, RECURSIVE);
304 opt.format_callback = cgit_diff_tree_cb;
305 opt.format_callback_data = fn;
306 if (prefix) {
307 opt.nr_paths = 1;
308 opt.paths = &prefix;
309 prefixlen = strlen(prefix);
310 opt.pathlens = &prefixlen;
311 }
312 diff_setup_done(&opt);
313
314 if (old_sha1 && !is_null_sha1(old_sha1))
315 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
316 else
317 ret = diff_root_tree_sha1(new_sha1, "", &opt);
318 diffcore_std(&opt);
319 diff_flush(&opt);
320}
321
322void cgit_diff_commit(struct commit *commit, filepair_fn fn)
323{
324 unsigned char *old_sha1 = NULL;
325
326 if (commit->parents)
327 old_sha1 = commit->parents->item->object.sha1;
328 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
329}
330
331int cgit_parse_snapshots_mask(const char *str)
332{
333 const struct cgit_snapshot_format *f;
334 static const char *delim = " \t,:/|;";
335 int tl, sl, rv = 0;
336
337 /* favor legacy setting */
338 if(atoi(str))
339 return 1;
340 for(;;) {
341 str += strspn(str,delim);
342 tl = strcspn(str,delim);
343 if (!tl)
344 break;
345 for (f = cgit_snapshot_formats; f->suffix; f++) {
346 sl = strlen(f->suffix);
347 if((tl == sl && !strncmp(f->suffix, str, tl)) ||
348 (tl == sl-1 && !strncmp(f->suffix+1, str, tl-1))) {
349 rv |= f->bit;
350 break;
351 }
352 }
353 str += tl;
354 }
355 return rv;
356}